HEX Values and strings

if have hex value of 0b , want show string, leading 0 droped, i.e. output "b" when converted string.

how suggest make hex value of 0b print "0b"?

i checking if value of hex less 16, adda "0" it.

code: [select]


if(instnumber <= 15)
       sinsert = "0"+itohex(instnumber);


but feel bit arcane.

edit
i think found answer, makestring()


edit edit
makestring work  
forgot can pad values resulting in single character padded leading "0".

code: [select]


makestring(to_device$,":x19%04x68n%02x%02x%02x%02x%02x%02x%02x%02x;\n",pgn,i_byte[1],i_byte[2],i_byte[3],i_byte[4],i_byte[5],i_byte[6],i_byte[7],i_byte[8]);


hi,

try following, works hexvalues between 0 , $ff:

code: [select]

void loop()
{
  byte bb = 37;
  char shex[] = "00";
  shex[0] = nibbletochar(bb >> 4);
  shex[1] = nibbletochar(bb & 15);
  serial.println(shex);
}

char nibbletochar(byte b)
{
 b = b + 48;
 if (b > '9') b = b + 7;
 return b;
}

mike

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